A better way of looking at the post-May2015 landscape was posted by Alex McLaughlan on Twitter and is seen at the top of this page. (Of course the map only shows Britain and not Northern Ireland or the Isle of Man.)

(1) At the time of writing, Alistair Carmichael, the holder of the sole Liberal Democrat seat of Orkney and Shetland is in court. It is alleged that Carmichael breached Section 106 of the Representation of the People Act 1983, which outlaws false statements in relation to the "personal character or conduct" of a candidate.